the curves on surface issue it's solved seting flatten to the surface control point output. Still didnt know how to group points like:
1;1, 2;2, 3;3.....
1;2, 2;3, 3;4....
1;3, 2;4, 3;5...
....
That is correct. In reality there are 3 major versions of .NET 1, 2, and 4 (different versions of mscorlib.dll)
Rhino 4 uses .NET 2 which includes 3 and 3.5.
Rhino 5 uses .NET 4